Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Charge detection enables free-electron quantum computation.

C W J Beenakker1, D P DiVincenzo, C Emary

  • 1Instituut-Lorentz, Universiteit Leiden, P.O. Box 9506, 2300 RA Leiden, The Netherlands.

Physical Review Letters
|August 25, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect of 3-nitrooxypropanol supplementation combined with 6-hour grazing on enteric methane emissions and milk production characteristics.

Journal of dairy science·2025
Same author

Entropy and singular-value moments of products of truncated random unitary matrices.

Physical review. E·2025
Same author

Helical Luttinger Liquid on a Space-Time Lattice.

Physical review letters·2024
Same author

Experimental surgery as part of the development of degradable biomaterials for cardiovascular surgery

Rozhledy v chirurgii : mesicnik Ceskoslovenske chirurgicke spolecnosti·2023
Same author

Reflectionless Klein tunneling of Dirac fermions: comparison of split-operator and staggered-lattice discretization of the Dirac equation.

Journal of physics. Condensed matter : an Institute of Physics journal·2022
Same author

Deconfinement of Majorana Vortex Modes Produces a Superconducting Landau Level.

Physical review letters·2021
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Adding single-charge measurements to quantum computing with electron-spin qubits restores exponential speedup. This enables a deterministic CNOT gate for free fermions using basic components, overcoming classical simulation limits.

Area of Science:

  • Quantum computing
  • Quantum information science
  • Condensed matter physics

Background:

  • Quantum computers using electron-spin qubits with single-spin measurements are efficiently simulated classically.
  • Classical simulation limits the potential of certain quantum algorithms.

Purpose of the Study:

  • To investigate if adding single-charge measurements can restore the exponential speedup of quantum algorithms.
  • To explore the construction of quantum gates using these enhanced measurement capabilities.

Main Methods:

  • Simulating quantum computation with electron-spin qubits and single-charge measurements.
  • Implementing a controlled NOT (CNOT) gate for free fermions using beam splitters and spin rotations.
  • Analyzing the determinism of the CNOT gate based on charge detection methods (counting vs. parity).

Related Experiment Videos

Main Results:

  • Single-charge measurements restore the exponential speedup lost with only single-spin measurements.
  • A CNOT gate for free fermions was constructed using basic quantum optical elements.
  • The gate achieves near-determinism with electron counting and full determinism with parity measurements.

Conclusions:

  • Single-charge measurements are crucial for achieving quantum advantage in electron-spin qubit systems.
  • The developed CNOT gate offers a pathway towards deterministic quantum computation with fermions.
  • This work highlights the importance of measurement strategies in quantum algorithm implementation.